P21_032 - 32. (a) Using Eq. 20-54 for process D A gives p D...

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32. (a) Using Eq. 20-54 for process D A gives p D V γ D = p A V γ A p 0 32 (8 V 0 ) γ = p 0 V γ 0 which leads to 8 γ =32 = γ = 5 3 which (see § 20-9 and § 20-11) implies the gas is monatomic. (b) The input heat is that absorbed during process A B : Q H = nC p T = n µ 5 2 R T A µ T B T A 1 = nRT A µ 5 2 (2 1) = p 0 V 0 µ 5 2 and the exhaust heat is that liberated during process C D : Q L = nC p T = n µ 5 2 R T D µ 1 T L T D = nRT D µ 5 2 (1 2) =
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